https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77931
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-10-11
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, we're hitting /* Ugh */ which shouldn't really happen. BLOCK_VARS should
be a sub-chain of gimple_bind_vars. It looks like BLOCK_VARS in this case
has a common sub-chain with gimple_bind_vars instead...
/* Scrap DECL_CHAIN up to BLOCK_VARS to ease GC after we no longer
need gimple_bind_vars. */
tree next;
tree end = NULL_TREE;
if (gimple_bind_block (stmt))
end = BLOCK_VARS (gimple_bind_block (stmt));
for (tree var = gimple_bind_vars (stmt); var != end; var = next)
{
/* Ugh, something is violating the constraint that BLOCK_VARS
is a sub-chain of gimple_bind_vars. */
if (! var)
break;
next = DECL_CHAIN (var);
DECL_CHAIN (var) = NULL_TREE;
}
and we have
gimple_bind_vars: c1D.2424 varD.2425 inaD.2426 yD.2460 clD.2462
BLOCK_VARS: <<< Unknown tree: imported_decl >>> <<< Unknown tree: imported_decl
>>> c1D.2424 varD.2425 inaD.2426 yD.2460 clD.2462
